• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.241-243
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• 2004

마이크로어레이 칠을 이용한 실험은 한 번에 수백 혹은 수십만 개의 유전자 발현 정보나 유전자형을 얻을 수 있기 때문에 유전자 비교 분석에 있어서 획기적인 방법이라 할 수 있다. 정차 마이크로어레이 칩을 이용한 실험이 활발히 진행되면서 마이크로어레이 이미지 분석을 위한 소프트웨어가 필요로 하게 되었으며, 이를 위해 않은 소프트웨어들이 개발되었다. 하지만 지금까지 개발되어온 소프트웨어들은 필요한 기능을 하는 모듈을 재사용하여 소프트웨어를 쉽게 업데이트(update)하거나, 다른 소프트웨어 개발 시에 일부 필요한 모듈(module)들을 쉴게 재사용하기가 힘들었다 본 논문에서는 이러한 문제점을 극복하기 위해서 컴포넌트 기반으로 마이크로어레이 이미지 분석 소프트웨어 개발에 대해서 제안한다. 개발된 컴포넌트들은 사용자 편의에 맞게 새로운 마이크로어레이 이미지 분석 소프트웨어를 다시 개발하거나 단백질 침과 같은 다른 바이오 이미지 분석 소프트웨어 개발 시에서도 쉴게 재사용될 수 있어 개발기간 및 개발비용을 줄일 수 있다.

• Conservation Science in Museum
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• v.15
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• pp.122-137
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• 2014

The National Museum of Korea own a historical document box ^K976 that was once used to store Joseon Wangjo Sillok ^{Annals of the Joseon Dynasty} of the Joseon Dynasty. The rectangular box has a lid, and the entire surface is varnished with black lacquer. The wood of the box had become warped and the upper part of the wooden frame had been damaged. In some areas, the paint was flaking off, exposing the underlying wood, and an iron ring that connected the lid to the body of the box was missing. Thus, in 2013, Conservation Science Department in National Museum of Korea began to repair and restore the Joseon document box. Before the treatment, analyses were conducted to examine the box's structure, damaged parts, species of wood, and lacquering techniques. The wood was found to be that of a linden tree. As for the lacquering technique, the surface of the box was first coated with a layer of lacquer and bone ash, and then covered with Korean traditional paper. Next, the box was painted with a layer of mud and ashes, followed by a layer of black pigment mixed with soot, and then varnished again with lacquer.

• Journal of Conservation Science
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• v.33 no.1
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• pp.17-24
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• 2017

Studies were conducted on manufacturing techniques by applying microscopy and conservation treatments on the annals of Joseon dynasty storage box at the National Museum of Korea. The results revealed that lime tree wood(Tilla spp.) was used to make the annals of Joseon dynasty storage box. Lacquering techniques were used to coat the box with a layer of lacquer and bone ash and then cover it with traditional Korean paper. After being covered with traditional Korean paper, more layers were applied in the following sequence: mud ashes, black lacquer, pure lacquer, and black lacquer. Before conservation treatments, some components and lacquer layers were missing in addition wood joint were loose. Therefore, conservation and restoration should be conducted based on the identified wood and by observing the shape of the remaining components.

• Conservation Science in Museum
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• v.7
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• pp.53-62
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• 2006

The wooden armor frame and various lacquerware artifacts excavated from the low swamp remains in Imdang, Gyeongsan have very weak material and lacquer coating; in case they are exposed in the air, they are likely to be shrunken and deformed immediately. The wooden armor frame has large size and it might be dissolved during freeze-drying. The lacquer coating of lacquerware blocks the penetration of chemicals and it is very likely to swell or peel off during the treatment. Therefore, to prevent the dissolution during vacuum freeze-drying, the wooden armor frame was replaced with t-butanol and impregnated in t-butanol solution with PEG#3, 350 43%, and lacquerware was impregnated in PEG#3, 350 40% solution at room temperature and freeze-dried. According to the analysis of the lacquer fragment from the lacquerware, the lid and the mounted cup was pasted with the mixture of lacquer and black pigment (soot) on the base layer after the first coating and pasted two or three times more with natural lacquer; the red lacquered wooden cup was pasted with the mixture of lacquer and black pigment on the base layer and pasted once on the middle layer. The top lacquer (red) was pasted with the mixture of iron oxide(Fe₂O₃).

• Journal of Conservation Science
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• v.37 no.2
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• pp.77-89
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• 2021

In this study, materials and color formation techniques were assessed for black potteries excavated from the Janghyeon-dong, Jungsan-dong and Gyodong-ri sites during the Proto-Three Kingdoms period in Ulsan, Korea. Although the black potteries were black superficially, the inner cores were either black or reddish yellow. Microscopy analysis identified that body clay was used for reddish iron oxide rich soils with quartz, alkali feldspar and mica, along with grains of myrmechite texture. Additionally, as marginal differences exist in the contents of SiO₂, Fe₂O₃ and CaO, the composition of the host rock and clay distributed around the sites was affected. Thus, we can deduce that pottery was made by soiling at a short distance. Raman spectroscopy results revealed that the black layer of the black pottery was used as amorphous combustion carbon. In addition, as a transparent layer of brown lacquer was observed on the substrate that was in contact with the surface layer, the black layer of the pottery induced black color development by a combination of combustion carbon and lacquer. Based on the mineral composition and microtexture of the body clay, the firing temperature of the potteries seemed to range from 750 to 850℃, whereas the lacquer layer was pyrolyzed at 468℃ by thermal analysis. Therefore, a combined layer of combustion carbon and lacquer, which formed the black color, was painted after the body clay was fired.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.40-41
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• 2007

송전선로 선로정수는 전력계통 운영 Data 파일의 중요요소로서 정상분, 영상분, 임피던스 및 어드미턴스가 있다. 이들 선로정수는 계산프로그램을 이용하여 산출 활용하고 있으며 발변전소 준공시험시 정수 실측값은 참고자료로 활용하였다. 기존의 전압을 인가하여 측정한 전압강하법으로는 유도전압의 영향으로 운전중인 변전소에서는 측정이 불가하였으나 신규 도입한 선로정수 측정장비는 전류를 회로의 주입하여 이때 발생하는 전압을 측정하는 방법으로 전류원의 주파수 가변이 가능하여 상용주파수의 유도전압대역을 피해가면서 측정할 수 있는 장점이 있다. 이러한 측정장비들의 발달로 계산값과 실제 측정값과의 차이를 확인, 분석하고자 선로정수를 실측하게 되었다.

• Journal of Conservation Science
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• v.36 no.6
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• pp.519-532
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• 2020

This study aimed to interpret the coloring materials recorded in the ceremonial writing with the scientific investigation results of the Hanging Painting of the Chiljangsa Temple (Five Buddhas). The results confirm that the Jinboon, Joohong, Hwangdan, Hwanggeum and Seokjahwang are clearly connected to lead white, cinnabar, minium, gold, and orpiment, respectively. Danghayeop and samrok are related to Copper trihydroxychloride, while Daecheong and Joongcheong are azurite, and they seems to be classified by the particle size. Yeonji and Chunghwa are organic dyes in red and blue, respectively, with blue confirming the existence of the side, but Yeonji differs from the names of the ancient texts and Chinese characters; it is unclear whether it is a commonly used Yeonji because of differences in the names of the ancient texts. The presence of Sootohwang has not been confirmed in the gwaebultaeng, but it can be extracted from the soil as a yellow-colored material but the possibility of Deunghwang cannot be ruled out.

• Korean Journal of Microbiology
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• v.26 no.4
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• pp.283-290
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• 1988

A spontaneous revertant of mutation rbsB103 that is ribose taxis-positive was characterized. This revertant was found to be export-competent in the export of ribose-binding protein shown by the disappearance of accumulated mutant precursor protein and the export of mature ribose-binding protein to the periplasm. The reversional change was shown to be in the region of risB gene that codes for the amino terminal portion of ribose-binding protein. Analysis by high-performance liquid chromatography of peptide patterns of ribose-binding proteins confirmed the relationship between the wild-type and the revertant proteins as shown for the mutant previously (Iida et al., 1985). When the processing rate of presursor proteins from the wild type and the revertant strain in vivo was compared by pulse-chase experiment, it was found that processing is less efficient than normal in the revertant. Purified mature proteins from both wild-type and revertant were subjected to amino acid sequencing. The results confirmed the amino acid changes deduced from the DNA sequencing and showed that processing of the revertant precursor occured in the correct position even though there are two different amino acids present in the signal sequence.

• Journal of Conservation Science
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• v.32 no.4
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• pp.501-510
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• 2016

In this study, we investigated the degradation of adhesives when exposed to ultraviolet light irradiation using samples of lacquer (L), treated lacquer (TL), lacquer mixed with glue (LG), and urushiol mixed with glue (UG). Four types of film specimens were collected under the ultraviolet exposure time, and gloss test, tensile shear strength test, scanning electron microscope analysis, and infrared spectroscopic analysis were conducted for the specimens. LG and UG showed lowering rate of gloss is somewhat later than L. Also, it was observed that with increasing exposure time to ultraviolet irradiation, the surface of L began to show spherical pits and cracks when the polysaccharide layers started to be exposed, whereas the surfaces of LG and UG remained smooth. The Infrared spectra of L and TL showed that the intensity of the overall peak decreased with increasing ultraviolet irradiation time. There was no change in the peak intensity of LG, but for UG, the peaks at $3013cm^{-1}$, $1593cm^{-1}$ and so on disappeared and the overall intensity declined. The tensile shear strength of LG and UG was maintained or increased as compared to the initial test, whereas the tensile shear strength of L decreased sharply after 600 h. LG and UG exhibited fewer changes as a result of high temperature and humidity conditions, and they retained their strength under UV exposure. These results indicate that LG and UG are more durable than L when subjected to environmental change.

• JOURNAL OF ELECTRICAL WORLD
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• s.454
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• pp.68-69
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• 2014

올 해 우리나라에서 가장 많이 회자된 단어 중 하나가 '통일대박'이 아닐까 싶다. 그런데 과연 한반도의 통일이 우리에게 대박을 가져다줄까. 이 질문에 대해 다른 분야에서는 모르겠지만, 전력산업 분야에 있어서 만큼은 '대박'을 충분히 기대할 수 있다는 것이 중론이다. 하지만 이 '대박'은 준비된 자만이 누릴 수 있는 혜택이라는 점 역시 분명한 사실이다. 그동안 전력분야에서 200만kW 대북송전 등 다양한 분야에서 논의가 있어 왔지만 북한의 전압체계가 어떻게 되는지, 전력망이 어떻게 연계돼 있는지 등 실상을 정확히 아는 이가 없는 것이 현 실태다. 이런 가운데 지난달 15일 국회 신성장산업포럼(대표 노영민 국회의원)이 주최하고 전기산업진흥회 전기연구원이 주관한 '남북 전력기자재 통일포럼'은 그 준비의 필요성을 알렸다는 점에서 의의를 찾을 수 있을 것이다. 포럼에서 나온 내용을 결론적으로 분석하면, 이제부터 철저히 준비하지 않으면 한반도가 통일이 되더라도 우리가 '대박'을 칠 수 없다는 점이다. 따라서 지금부터라도 정부를 중심으로 한전 등 전력그룹사, 전기계 협 단체, 관련 기업 등 범 전기계가 나서 통일대박을 위한 준비에 철저를 기해 나가야 할 것이다.